I forgot to include that my doubts were based upon all of the problems we had with the Vietnam War era FADAC, it was constantly in the shop being fixed.
I used FADAC, never encountered any maintenance issues with it. Maybe luck of the draw. At the time, most commanders wouldn’t let FADAC data be shot, always used manual solution and the FADAC as the check. Part of that was that the initial manual data was quicker, although for subsequent adjustments FADAC was quicker. I was of the mind to shoot FADAC and check manual, but the highers wouldn’t buy it.